The 10th Deneb Light Cavalry began the Fourth Succession War held in reserve on their then homeworld of Rowe. They first entered action in 3029 when Marshal Sanders, commander of the 10th, moved to reinforce Alpha Regiment of Wolf's Dragoons on Glenmora, where they fought with them against the 5th and 16th Galedon Regulars. While the arrival of the 10th saved the Dragoons, Marshal Sanders was killed in the early fighting, after which Colonel Jaime Wolf declared the 10th honorary Dragoons and assumed command of the unit. [2]In late July the survivors left Glenmora aboard Dragoon dropships and accompanied them to Crossing.[3]

Upon reaching Crossing, Colonel Wolf ordered the 10th to disperse and protect the local population as the Dragoons prepared for the inevitable Combine attack.[4] When the Dragoons found themselves hard pressed by Combine forces in the Tartarus Caldera, two companies of light mechs and a company of assault tanks from the 10th Deneb arrived to reinforce them, buying them enough time for the Dragoon's Zeta Battalion to arrive and turn the tide of battle. This marked the end of the 10th's participation in the Fourth Succession War[5]

It was as a result of their actions during the Fourth Succession War that the wolf's head symbol was added to their unit insignia.

Digging in the face of an expected counter attack, AFFS forces outnumbered the remains of the Sixth and 8th Galedon Regulars sent to retake the planet, inflicting heavy losses thanks to the old-school Kurita tactics practiced by both units. Trapping the Combine forces in the remains of a Succession Wars era fort, the Light Cavalry only withdrew when First PrinceHanse Davion recalled the FedCom forces, but not before they stripped machinery and materials from the manufacturers on-world.[7]

Like all the Deneb Light Cavalry, the 10th preferred to use their superior speed and mobility to hit the enemy from a variety of unexpected directions, keeping them off balance and unable to respond effectively.[15]